package charatr03.example;
class Student2 {
    String name;// 声明姓名属性
    int age;
    void read() {
        System.out.println("大家好，我是"+name+"，年龄"+age);
    }
}
public class Example02 {
    public static void main (String [] args){
        Student2 stu1 = new Student2();
        Student2 stu2 = null;
        stu2 = stu1;
        stu1.name = "小明";
        stu1.age = 20;
        stu2.age = 50;
        stu1.read();
        stu2.read();
    }
}
